Surgical instrument



G. G. ALLARD.

SURGICAL INSTRUMENT.

APPLICATION man OCT. 29. I918.

1,308,728. Patented July 1, 1919.

zzventor: (gear 6 flllczrci, b

nu: COLUMBIA FLANOORAPH cu., WASHINGTON, n. c.

UNITED sT TEsPATENT oFrioE.

GEORGE G. ALLARD, OF ST. PAUL, MINNESOTA.

SURGICAL INSTRUMENT.

Application filed October 29, 1918.

To all whom it may concern:

Be it known that I, GEORGE G. ALLARD, a citizen of the United States,residing at St. Paul, county of Ramsey, and State of Minnesota, haveinvented a new and useful Improvement in Surgical Instruments, of whichthe following is a specification.

The object of this invention is to provide an improved form of surgicalinstrument which is particularly adapted for removing adenoids, tonsilsand other growths from the passage connecting the nose and throat and toprovide an instrument of this kind with means for cutting and holdingthe tissue around the growth so that the cutting members will whenoperated make a clean and efficient cut for removing a growth. WViththese and other objects in view my invention comprises the features ofconstruction and combination of parts hereinafter more particularlydescribed and claimed. In the accompanying drawing forming part of thisspecification Figure 1 is a side elevation of my invention; Fig. 2 is aplan View; Fig. 3 is an end view; Fig. 4 is a section taken on the lineXX of Fig. 1, and Fig. 5 is a section taken on the line YY of Fig. 1.

In the drawing, A indicates an operating stem upon which the parts of myinstrument are suitably mounted, said support being in the form of along shank having a handle member 2 on one end and formed with a holderor guard B on its opposite end. This holder or guard has two upwardlyand outwardly curved sides 3 and 4: connected at their upper ends by thecross bar 5 the said parts being disposed angularly to the stem A andextending above the same. The guard is adapted to be held firmly againstthe wall of the passage between the nose and throat with the growth tobe removed protruding through the opening in the guard. The bar 5 isformed with a cut edge 6 which will out into and release a portion ofthe tissue when the guard is pressed into position for use. Disposedover the inner faces of the sides 3 and 4 and of the bar 5 are a pair ofshearing blades 7 and 8 which are formed with a pair of forwardlyextending shafts 9 and 10. These shafts are journaled in supports 11 and12 which are detachably fastened upon the shank A by screws 13 or othersuitable means. The movement of the shearing blades 7 and 8 when theshafts 9 and 10 are turned is back Specification of Letters Patent.

Patented July 1, 1919.

Serial No. 260,084.

and forth across the opening in the guard B. The shearing blades 7 and 8have inwardly directed cutting edges 14. Thus when the shafts 9 and 10are turned and the shearing blades closed the growth projecting throughthe opening in the holder B and artly released by the cutting of thetissue y the blade 6 is sheared completely away and removed. The ends ofthe shafts 9 and 10 adjacent to the handle 2 are formed with a pair ofcrank arms 15 and 16 the outer ends of which are provided with a pair ofswiveled threaded blocks 17 and 8, through which a right and left handlethreaded screw shank 19 is free to turn. One end of said screw shank hasa knurled head 20 which is adapted to be turned by hand to revolve thescrew shank and said screw shank is provided with a guide pulley 21having an annular groove 22 in which a stationary guide 23 mounted uponthe shank A is fitted. The guide pulley holds the threaded shank 19causing a movement lengthwise thereof and thus causing the screw shankto swing the arms 15 and 16 and close or open the cutting blades 7 and 8when the head 20 is turned. The guide pulley 21 moves up and down on theguide 23 when the shank 19 is turned to compensate the movement of theblocks 17 and 18 and arms 15 and 16. The instrument can easily beadjusted and held with the holder B placed against the wall of thepassage between the nose and throat and with the growth to be cut awayprotruding through the holder. While so held the shearing blades caneasily and quickly be efficiently closed to remove the growth.

In accordance with the patent statutes I have described the principlesof operation of my invention together with the apparatus which I nowconsider to re resent the best embodiment thereof, but I esire to haveit understood that the construction shown is only illustrative and thatthe invention can be carried out by other means and applied to usesother than those above set forth within the scope of the followingclaims.

Having described my invention, what I claim as new and desire to protectby Letters Patent is 1. A surgical instrument comprising, incombination, an operating stem having a laterally disposed loop forminga tissue holder, a pair of shearing blades coiiperating with said holderand movably mounted upon said stem for transverse movement across the Vholder, and means operable from the outer end of said stem for closingand opening said blades.

2. A surgical instrument comprising, in combination, an operating-stemhaving a laterally disposed loop forming a tissue holder, a portion ofsaid loop being formed with a tissue cutting blade, a pair of shear- V10 ing blades cooperating with said loop to With saidshafts for turningthem to effect the shearing action of said pair of blades. In Witnesswhereof I have slgned my name to this specification. V

GEORGE G. ALLARD.

Copies of this patent may be obtained for fiire cents each, byaddressing the Commissioner of Patents. Washington, I). O.

